CensorNet Professional is a Web filtering and Internet management tool
that is designed to protect, control, and monitor individuals accessing
Internet resources on a local area network. It features the ability
to control users and machines, group policies, time quotas, realtime
content filters (by file extension or image/MIME type), modules,
comprehensive reporting with audit trails and management reports, access
schedules, and bandwidth limitations. Transparent authentication with
Active Directory is available for ease of deployment. Administration can
been done using a Web interface.

godot go.eco Virtual Appliance is an all-in-one solution for enterprise networking. It provides Internet gateway, DNS, DHCP, firewall, email, VPN, ACL, and VoIP services, among many others. It is easy to set up and mostly self-configuring. It runs on VMWare Server or Player.

Crowbar is a desktop social networking application. It views and posts status updates to Twitter and follows. It can unfollow people who are not following you back, but abusing this feature is discouraged.